package com.zfj.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * @author zfj
 * @date 2022/5/28 -17:26
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue,Integer> {
	Set<Integer>set=new HashSet<>();
	/**
	 * Initializes the validator in preparation for
	 * {@link #isValid(Object, ConstraintValidatorContext)} calls.
	 * The constraint annotation for a given constraint declaration
	 * is passed.
	 * <p>
	 * This method is guaranteed to be called before any use of this instance for
	 * validation.
	 * <p>
	 * The default implementation is a no-op.
	 *
	 * @param constraintAnnotation annotation instance for a given constraint declaration
	 */
	@Override
	public void initialize(ListValue constraintAnnotation) {
		int[] vals=constraintAnnotation.vals();
		for (int val : vals) {
			set.add(val);
		}
	}

	/**
	 * Implements the validation logic.
	 * The state of {@code value} must not be altered.
	 * <p>
	 * This method can be accessed concurrently, thread-safety must be ensured
	 * by the implementation.
	 *
	 * @param value   object to validate
	 * @param context context in which the constraint is evaluated
	 * @return {@code false} if {@code value} does not pass the constraint
	 */
	//是否效验成功
	@Override
	public boolean isValid(Integer value, ConstraintValidatorContext context) {
		return set.contains(value);
	}
}
